Home / 133,079.40-199,519.26-80,478.12

Finding the Fourth Proportional to 133,079.40, 199,519.26 and 80,478.12

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Solution

The fourth proportional to 133,079.40, 199,519.26 and 80,478.12 is: 120,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.40 : 199,519.26 = 80,478.12 : x
  2. Step 2: Convert to fraction form
    133,079.40/199,519.26 = 80,478.12/x
  3. Step 3: Cross multiply
    133,079.40x = 199,519.26 × 80,478.12
  4. Step 4: Simplify right side
    133,079.40x = 16,056,934,948.59
  5. Step 5: Solve for x
    x = 16,056,934,948.59/133,079.40
  6. Step 6: Final answer
    x = 120,656.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.